# Questions Asked onDecember 6, 2010

1. ## chemistry! URGENT!!!

A gaseous mixture of O2 and N2 contains 30.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 365 mmHg?

2. ## Chemistry

Diethyl ether has a boiling point of 34.5C, and 1-butanol has a boiling point of 117C. Both of these compounds have the same numbers and types of atoms. Explain the difference in their boiling points. The answer I found was that: only 1-butanol can form

3. ## physics

Two identical containers are open at the top and are connected at the bottom via a tube of negligible volume and a valve which is closed. Both containers are filled initially to the same height of 1.00 m, one with water, the other with mercury, as the

4. ## chemistry

Find the percent by mass of sodium chloride in a 1.35 M NaCl solution. The density of the solution is 1.06 g/mL..............how do I go about doing this question thanks!

5. ## Chemistry

What is the molarity of the resulting solution when 300. mL of a 0.400 M solution is diluted to 800. mL?

6. ## chemistry

What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179 g/mL, should be used to make 4.60 L of an HCl solution with a of 1.9? HELP!!!

7. ## chemistry

how many grams of Na2CO3 must be dissolved into 155 g of water to create a solution with the molality of 8.20 mol/kg?

The free-fall acceleration on Mars is 3.7 m/s2. (a) What length pendulum has a period of 4 s on the earth? cm What length pendulum would have a 4 s period on Mars? cm (b) A mass is suspended from a spring with force constant 10 N/m. Find the mass suspended

9. ## Chemistry

What is the concentration of a H2SO4 solution if 10.0 mL of the solution is neutralized by 7.8 mL of a 0.20 M NaOH solution?

10. ## chem110

What is the value of the smallest bond angle in XeF4?

11. ## Chemistry

At the melting point of benzene, the DH of fusion is 9.95 kJ/mol and the DS of fusion is 35.7 J/K.mol. What is the temperature at which benzene melts?

12. ## Physics

A diver runs horizontally off the end of a diving board with an initial speed of 1.25 m/s. If the diving board is 3.20 m above the water, what is the diver's speed just before she enters the water? (Neglect air resistance.)

13. ## calculus

Determine whether the sequence is arithmetic. If so, find the common difference. (Assume that n begins with 1.)a n=2(1/5)n

14. ## physics

two identical objects move with speeds of 5.0 m s and 25.0 m s. What is the ratio of their kinetic energies?

15. ## colllege chemistry

for the haber process for the synthesis of ammonia: N2(g)+ 3H2(g)= 2NH3(g), what is ΔG (kJ/mol) at298 K for a reaction mixture that consists of 1.5 atm N2,3 atm H2 and 1.8 atm NH3? [ΔG° f(NH3)= -16.66kJ/mol]

16. ## college

A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5

17. ## PHI

4. Reporter: A new campaign finance reform bill being considered by Congress would limit the amount of campaign contributions that political candidates can receive. However, a survey of candidates running for mayor, governor, and senate seats shows that

18. ## Chemistry

Which of the following gases would you keep in an outdoor storage tank in winter? Explain why. methane(CH4), Propane(C3H8), or butane(C4H10)

19. ## Chemistry

What happens to the sample's reported water content if the salt decomposes yielding a volatile product? If the water is not completely removed from the salt during the heating process, will the reported water-to-salt mole ratio be high or low? Explain

20. ## Physics

A 500 g block is released from rest and slides down a frictionless track that begins h = 1.70 m above the horizontal, as shown in Figure P13.56. At the bottom of the track, where the surface is horizontal, the block strikes and sticks to a light spring

21. ## Physics

Suppose a monatomic ideal gas is changed from state A to state D by one of the processes shown on the PV diagram. Find the total work done on the gas if it follows the constant temperature path A-C followed by the constant pressure path C-D. A = 2atm and

22. ## Calculus

Find the point on the graph of y=2x-4 that is closest to the point (1,3). (Optimization equation)

23. ## Physics

A sign is supported at its top right corner, point P. The sign is a square with 40 cm on each side and has 8.0 kg mass. What is the magnitude of the horizontal force that P experiences?

24. ## Chemistry

What mass of silver nitrate is dissolved in 40.0 mL of a 0.400 M solution of silver nitrate?

25. ## chemistry

A compound,KBrOx, is analyzed and found to contain 52.92% Br by mass. What is the value of x?

26. ## chemistry

What is the expected van't Hoff factor for NaC2H3O2 in an aqueous solution, assuming 100% dissociation.

27. ## college Chemistry

(Questions 6 and 7) For the following elements list the electron configuration. Assume it is neutral and in its ground state. 6. Fluorine (a) 1s22s22p1 (b) 1s22s22p63s1 (c) 1s22s22p5 (d) 1s22s22p63s23p64s1 (e) 1s22s1 7. Gallium

28. ## College Chemistry

The value of ΔG°f at 25°C for gaseous mercury is 31.85 KJ/mol. What is the vapor pressure of mercury at 25°C? [Hint: calculate the Kp for the reaction Hg(l)=Hg(g)]

29. ## Calculus

one ship (A) is sailing due south at 16 miles per hour and a second ship (B), 32 miles south of A, is sailing due east at 12 miles per hour. At what rate are they approaching at the end of 1 hour?

30. ## College algebra

A person is driving a car on a straight road. The graph shows the distance in y miles that the individual is from home after x hours. the graph has the following points (1, 40) and (3, 90) Find the slope intercept of the line y = ____x + ______ How fast is

31. ## Chemistry!

A sealed flask contains 0.60 g of water at 28 degrees celcius. The vapor pressure of water at this temperature is 28.36 mmHg. What is the minimum volume of the flask in order that no liquid water be present in the flask?

32. ## college Chemistry

What is the mole of oxalic acid? Equation:H2C2O4 + 2NaOH---> Na2C2O4 + 2H2O *Moles of oxalic acid dihydrate is 0.032 mole. * Molarity of oxalic acid solution is 0.128 M oxalic acid solution. * Initial volume of Oxalic acid is 19.8 ml and Final volume is

33. ## physics

A driver is running 3.6 m/s and dives out horizontally from the edge of a vertical cliff and reaches the water below 2.0s later. A) How high was the cliff? B) How far from its base did the driver hit the water?

34. ## physics

Resonance of sound waves can be produced within an aluminum rod by holding the rod at its midpoint and stroking it with an alcohol-saturated paper towel. In this resonance mode, the middle of the rod is a node while the ends are antinodes; no other nodes

35. ## Honor Biology

In an experiment, plants were grown under colored filters that allowed equal amounts of light of different colors to strike different plants. Under which filter do you think plants grew the slowest? Why?

36. ## physics

A 0.50 kg ball that is tied to the end of a 1.4 m light cord is revolved in a horizontal plane with the cord making a 30° angle with the vertical. determine the balls speed.

37. ## math

If she made the last free throw, then her probability of making the next one is 0.9. On the other hand, If she missed the last free throw, then her probability of making the next one is 0.5. Find the long-run free-throw shooting probabilities for this

38. ## math/algebra

1. Which of the following inequality signs would make a true statement if it replaced the question mark in the following equation? 3− 5?− 3 A. < C. ≤ B. > D. = 2. Solve the inequality −4y + 6 2 C. y ≤ 5 B. y < 5 D. y > 5 4. At a baseball game,

39. ## physics

A 0.50 kg ball that is tied to the end of a 1.4 m light cord is revolved in a horizontal plane with the cord making a 30° angle with the vertical. (b) If the ball is revolved so that its speed is 4.0 m/s, what angle does the cord make with the vertical?

40. ## physics

A 0.50 kg ball that is tied to the end of a 1.4 m light cord is revolved in a horizontal plane with the cord making a 30° angle with the vertical. (b) If the ball is revolved so that its speed is 4.0 m/s, what angle does the cord make with the vertical?

41. ## college

If two indistinguishable dice are rolled, what is the probability of the event {(2, 2), (3, 2), (1, 2)}?

42. ## Chemistry

A 120. mL sample of a gas is at a pressure of 1.50 atm. If the temperature remains constant, what will be its volume at 3.50 atm of pressure?

43. ## physics

A compact car, mass 705 kg, is moving at 1.00 102 km/h toward the east. Sketch the moving car. Do this on paper. Your instructor may ask you to turn in this work.. (a) Find the magnitude and direction of its momentum. Draw an arrow on your sketch showing

44. ## Honor Biology

ATP is used to power the movement of your muscles as you turn the pages of a book. Where did the energy in the ATP come from? Trace the energy in the ATP molecule back to the sun.

45. ## physics

A 8.5-kg bowling ball is rolling down the alley with a velocity of 3.5 m/s. For each impulse, a and b, as shown below, find the resulting speed and direction of motion of the bowling ball.

46. ## physics

block a of mass 4kg is on a horizontal, frictionless tabletop and is placed against a spring of negligible mass and spring constant 650n/m. the other end of the spring is attacked to a wall. the block is pushed toward the wall until the spring has been

47. ## college

Figure 11-50 shows two examples of SHM, labeled A and B. (The vertical axis is marked in increments of 0.5 m and the horizontal axis is marked in increments of 1 s.)

48. ## Physics

A sign is supported at its top right corner, point P. The sign is a square with 40 cm on each side and has 8.0 kg mass. What is the magnitude of the horizontal force that P experiences?

49. ## physics

A 2200-kg sport utility vehicle traveling at 96 km/h can be stopped in 0.21 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash, and the

50. ## physics

A compact car, mass 705 kg, is moving at 1.00 102 km/h toward the east. Sketch the moving car. Do this on paper. Your instructor may ask you to turn in this work.. (a) Find the magnitude and direction of its momentum. Draw an arrow on your sketch showing

51. ## science

where does horizontal sliding take place on the earth?

52. ## Honor Biology

Without oxygen, cellular respiration grinds to a standstill, although glycolysis can continue to make some ATP anaerobically for a short time. When oxygen runs out, why does electron transport stop? Why do you thing the Krebs cycle stops?

53. ## physics

A skier is coasting on perfectt smooth snow at 7.0 m/s and crosses a rough patch of snow 35m long. If the frictional force exerted on the skier is 6.0 N, what is her speed as she leaves the patch of snow? Assume the skier and her skis habe a mass of 90.0

54. ## college chemistry

what is the highest freezing point of H2O, NaCl, and HF

55. ## math/probability

The Probability of drawing two black balls in succession from a bag containing 4 red and 3 black balls when the ball first drawn is a) replaced b) not replaced

56. ## statistics

The final rankings of the top 20 NCAA college basketball teams are an example of which level of measurement?

57. ## Chemistry

A 0.5962g sample of iron ore is dissolved in acid producing Fe3+. Through a series of reactions, the iron precipitates as the Fe(OH)3. The precipitate is heated, forming solid Fe2O3. What is the mass % of iron in the sample if the analysis produced 0.3210g

Assignment for week 5 Given the following information, draw the project network. Compute the early, late and slack times for the project network. which activities are on the critical path have only the start or finish of the activity on the critical path?

59. ## Physics

A object-spring system oscillates with an amplitude of 4.0 cm. If the spring constant is 210 N/m and object has a mass of 0.50 kg, determine each of the following values. (a) the mechanical energy of the system (b) the maximum speed of the object (c) the

60. ## College Chemistry

A 1.00-L solution saturated at 25°C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2O4=128.09 g/mol]

61. ## earth

Compare the patterns of earthquakes, colcanoes and mountain ranges on Earth.

62. ## Chemistry

Write a balanced redox reaction between mercury and bromine to form Hg2^2+.

63. ## Chemistry

If some volatile impurities in the crucible are removed from the hydrated MgSO4 along with the water, is the reported mass of water removed too high or too low. Explain.

64. ## Chemistry

Calculate the molarity of an aqueous NaOH soultion if 32.00ml of it is required to titrate. 0.6789 g of oxalic acid to phenolphthalein end point. The balanced chemical equation is H2C2O4 + 2NaOH-> Na2C2O4 + 2H2O

65. ## chem

Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a

66. ## english

Plan a straight line ESA lesson for a language level of your choice, to cover vocabulary connected with the topic of food:

67. ## Chemistry

Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide

68. ## chemistry

I have no clue, please help and explain! =) Find the pH of a 0.150 M solution of a weak monoprotic acid having Ka=1.2×10−5. Find the percent dissociation of this solution. Find the pH of a 0.150 M solution of a weak monoprotic acid having

69. ## college Chemistry

Decide if the molecule has a dipole moment, (if the molecule is polar) as follows: a) dipole (polar molecule) b) no dipole (non-polar molecule) c) ionic (not a molecule) d) super covalent e) none of the above 11.) CsF 12.) nitrogen 13.) Methane 14.)

70. ## math(trig)

1) A 6-ft propeller turns at 1200 revolutions per minute. Compare the angular velocity of the tip with the angular velocity at a point 10 in. from its center. 2) What is the angular velocity of a point on the tread of a 15-in. diameter tire on a car

71. ## Physics

An oil droplet with a mass of 3.50 x 10^-15 kg accelerates downward at a rate of 2.50 m/s2 when it is between two horizontal charged plates that are 1.00 cm apart. Assuming that the excess charge on the droplet is negative and the top plate is positive,

72. ## College Chemistry

Calculate the molar solubility of Mn(OH)2 in grams per liter when buffered at pH 8.5 Mn(OH)2=88.953g/mol; Ksp=1.9 x 10^-13

73. ## Chemistry

When 50.0 g of iron(3)nitrate, FE(NO3)3, is dissolved in water , the number of nitrate ions present in the solution is

74. ## Honor Biology

After a biochemical analysis of the victim's tissues, brilliant biologist/criminal investigator J. C. Mickleberry announced his findings: "Contrary to the conclusions of the police, the victim did not suffocate. The electron carriers in his mitochondria

75. ## Calc

You need 50 pounds of two commodities costing $1.25 and$1.60 per pound. a) Verify that the total cost is y=1.25x + 1.60(50 - x), where x is the number of pounds of the less expensive commodity. b) Find the inverse function of the cost function.

76. ## Algebra 2

Need help on the #13-20. 13. What is the quotient of d − 2 ) d 4 − 6d 3 + d + 17 __________________ ? A. d 3 − 4d 2 − 8d − 15 R −13 B. d 3 − 8d 2 + 16d − 31 R 79 C. d 3 − 4d 2 + 9d + 35 D. d 3 − 8d 2 + 17d − 17 14. What is the sum of

158. ## math

Mrs.penn has a circular tablecloth with a circumference of 29 feet. Which expression could be used ro find the radius of the tablecloth? f. 29 - 2 pie g. 29/2 pie h. 29/pie j 29 + 2pie

159. ## math

franklin school has 3 boys for every four girls in the fifth grade. there are 140 students in the fifth grade. a.how many are boys? b.how many are girls?

160. ## Physics

There is a 1.2 m distance between a crest and an adjacent trough in a series of waves on the surface of a lake. In 30s, 35 crests pass a buoy anchored in the lake. What is the speed of these waves?

161. ## college physics

One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?

162. ## Trigonometry

Minimum force required to prevent a ball weighing 29.6 pounds from rolling down a ramp which is inclined 14.9 degrees with the horizon?

163. ## math

the professinal base ball is 162 games.a player was at bat 3 times in each game, and he played 2/3 of the game. a.how many times was the player at bat during the season? b.the player hit o.250., which means he got a hit 25%of the time , or once in every

164. ## Marketing

22) A ______________ is an organized way of continually gathering and analyzing data to get information to help marketing managers make ongoing decisions.

165. ## physics

A full can of black cherry soda has a mass of 0.406 kg. It contains 3.38 m3 of liquid. Assuming that the soda has the same density as water, find the volume of aluminum used to make the can.

166. ## math

Simplify sin^2x+cos^2x+sec^2x -tan^2x+csc^2x-cot^2x

168. ## Calc

Show that f is strictly monotonic on the given interval and therefore has an inverse function on that interval. f(x) = abs. val. (x + 2), [-2, infinity)

169. ## Grammar

Diagram each sampile subject and simple predicate. 1. People arrived early. People/arrived 2.They started the machines. They/started 3. Other people were stading around. people/standing 4. Four women have arrived late. women/arrived 5. Most factories are

170. ## math

if you have a apple juice mix of 5 cups concentrate to 8 cups water, if you only make 1 cup of mix, how much water and how much concentrate do you need?

171. ## Math

Consider the equation below. (Round the answers to three decimal places. If you need to use -infinity or infinity, enter -INFINITY or INFINITY.) f(x) = 9 sqrt(xe*^(-x) (a) Find the interval on which f is increasing. ( , ) Find the interval on which f is

172. ## MATH

Allen started out with x marbles. He doubled his number of marbles by buying an additional x marbles from Betty. Then he gave away one-third of all his marbles to his friend Clarence. At the end of the day, he had 16 marbles. How many marbles did he start

3h=15

174. ## College Chemistry

The eqm. Constant for a reaction is 2.48 at 25°C. what is the value of ΔG° (kJ) at this temperature? (R=8.314 J/k mol)

175. ## spanish

I am preparing for my oral exam (spanish 1) and i wrote all this down, can any one check my grammar, conjugations and add-on if necessary And also would this last me 3 minutes or should i write more to each question?? Theme 1 (Las vacaciones) ¿Adónde

176. ## English 2

In “Civil Peace” Jonathan, the main character has a positive outlook on life despite his situation. Explain what is going on around Jonathan and how he is dealing with his difficult situation. Use text support from the story please.

177. ## college Chemistry

A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?

178. ## Chemistry

40 years ago, the first time a vehicle was driven over an extraterrestrial surface. The Soviet Lunokhod (moon walker) rover covered several miles on the moon, heated at night by a polonium-210 source, which undergoes an alpha decay to lead (Pb) yielding

179. ## Physics

Physics Question Finally, your friend's twin engine jet airplane lands. As it stands on the runway, you hear the sound of the engines getting louder and softer, rhythmically once every 2.3 s. The average frequency you hear is 3650 Hz. What are the

180. ## chemistry

The solubility of an ionic compound is 30 grams of compound in 100 mililiters of water. If 60 grams of the compound is dissolved in 200 mL of water, the solution will saturated. t/f

181. ## chem

how many moles of H2O will be produced from the complete combustion of 2.00g of CH4?

182. ## creative activities in other curriculum areas

which one of the following methods is preferred for teaching songs from recordings to young children? a-the phrase-wise method b-the whole-song method c-the combination method d-the strong-melody method

183. ## chem

how would you find the answer? A carbon nucleus has six protons and six neutrons. How many electrons would it take to equal the mass of a carbon nucleus?

184. ## Chemistry

For following problems 1 to 5, classify the bonds as: a) non-polar covalent b) polar covalent c) ionic d) metallic e) super covalent 1.) O-Cl 2.) Li-Br 3.) N-N 4.) N-H 5.) C-S

185. ## Chemistry

You take 2 liters of water at 20 degrees Celsius and remove heat at 200W from it for 5 min. What is the temperature and state of the water after the experiment? Some properties of water: Heat of fusion: 333.55 kJ/kg, Heat of vaporization: 2257 kJ/kg, Heat

186. ## human development 11 edition

Menopausal syndrome may be related to personal characteristics or past experiences?

187. ## math

If I am 11 years old on Earth,how old will I be in Mercury?

188. ## Chemistry

How many grams of sodium carbonate must be added to 2.50 kg of water in order to lower the freezing point of the resulting solution to 258 Kelvin?

189. ## Chemistry

Calculate the molarity of a 5.4% sodium hydroxide solution whose density is 1.07 g/mL.

my teacher gave me this question I don't get it. If a normal person blinks 25 times per minute how old would you be your next birthday?

191. ## MATH HELP!!

Ashley and Nick worked on a math project together. Ashley finished 1/6 of the project and Nick finished 2/8 of the project. How much more of the project is left? A: 3/4 B: 7/12 C: 5/6 D: 7/24 My answer: I think it's 7/12 but i'm not sure.

192. ## 5 th grade math

what is the mean for the following number? 40,60,55,45,100 ?______ what is the lest Common Multiple (LCM)for 6 and 12 ?_______ please! help me i got stuck with this today!! thank you.

193. ## college physics

One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?

194. ## math

the bag has 6 marbles in it. each marable is either red,blue,or green. what is the least number of marables that ou must pull out of the bag to be sure you have 2 marble the same color?

195. ## algebra

Someone please help me not sure if I even know what I am doing with any of this. write the following ratios in simplest form 5 3/5 to 2 1/10 5 3/5 2 1/10 x 100/100 = 8/20 = 2/5 the ratio of 7 dimes to 3 quarters 7/3 x 100/100 = 700/300 = 175/75 solve the

196. ## Marketing

Clustering techniques applied to segmenting markets

197. ## Chemistry

What is the boiling point of a solution made using 731g of sucrose, C12H22O11, in 0.250kg of water,h2o ?

198. ## algebra 2

27x^3-8=0 (difference of two cubes)

199. ## PHL/323

asked by HELP IM STUCK!!! ITS DUE TONIGHT
200. ## english

What are some red flags that indicate you should avoid a particular source?

286. ## physics (easy)

Will a 7.25 kg ball with a diamter of 22 cm float in water? I know that the radius is 11 cm and that the density of water is 1000kg/m^3 and I got that it will float but it just doesn't sound right. Could anyone help please?

287. ## algebra

I'm doing functions, and I don't know how I'm solving this equation wrong? the equation is y = (x-2)^2 - 1 when I graph it, the shape is supposed to be a parabola. I'm using -2,-1,0,1, and 2 as my X values. But I'm getting 15, 8, 3, 0, and -1 for my Y

288. ## social studies

If you from Iran,what do you like and don't like about america? Also why you decided to come to america?

289. ## algebra

How do I solve for x on both sides of the equation, i.e. 72x+48=42x-12? Is there a standard way of figuring this out?

290. ## Anatomy

The gland that helps regulate the endocrine system by secreting stimulating hormones is the____. Thanks for helping!

291. ## English

The problem is my thesis statement. That is the step I am stuck on.

292. ## HSM/220

You are the executive director of an established not-for-profit, community-based organization provider that offers high-quality educational, vocational, and training services to various segments of the local population. In response to the increasing

293. ## science

what is the condensed structure for the reactants and products of the following: cis-2-chloro-2-butene + HI-----> ??

294. ## geometry

The coordinates are a(0,2) b(12,0) and c(-6,0). If cm is a median, find the coordinates of m.

295. ## math

find each sum 65+18 How can you regroup ones in this sum?

296. ## Marketing

20) The process of naming broad product-markets and then segmenting them in order to select target markets and develop suitable marketing mixes is called:

297. ## finance

If we invest money for 10 years at 8% interest, compounded semi-annually, we are really investing money for ______ six month periods, during which we receive _______ percent interest each year.

298. ## College math

Analyze x²-6x-5y=1. Determine the vertex, focus, directrix, intercepts, axis of symmetry, and at least 2 other points on the graph.

299. ## college

suppose that you have 800ft of fencing. you are to construct a rectangular corral which is divided into two pieces. what are the dimensions that give the largest possible areas?

300. ## History

How does economic growth occur according to free market capitalist?

302. ## Prime Factorization

What is the prime factorization of 1,521? Please show work. Thanks!!

asked by Thanks to all Jiskha Teachers
303. ## math

how do you arrange these following numbers to make this equation true 18,9,24,20 and to =18 please help....

304. ## math

what is the 50 term of the arithmetic which begins with 20 is 105? what is the common difference?

305. ## Grammar

5. Most factories are busy. Factories/are busy 9. People are watching a show. People/are watching

306. ## HELP

What do you think is the most powerful statement of the Narrative Lif Of fredrick Douglass?

What influences did the colonies have on the imperialist nation

I am having a hard time starting my paper on Life of Pi by Yann Martel. My thesis is: If Richard Parker is Pi Patel then Pi is God. I don't know how to begin.

309. ## english

hey its me again... i think i need to reword my issue. i am having trouble clearing up my thesis. I feel like i have the idea but it doesnt set me up to write an organised paper. the idea being that if Richard is God and Richard and Pi are one then Pi is

310. ## math

Andy had 20% fewer marbles than Henry. When Andy gave 80 marbles to Henry, the number of marbles he had left was half of what Henry had. How many marbles did Andy have in the beginning? please help me

311. ## chemistry

PH3 has a mass of 17.33 grams, what is the mass in grams of H2 produced? 4 PH3 -> P4 + 6 H2

312. ## college calculus-initial value

dy/dx=cos(7x)+5/pi initial condition y(pi/4)=2

313. ## psychology

language structure is important in cognition, but is it really? For example, if a child said to you, "You, me, cookie, go now, hurry," you would know what the child meant even thought it is not grammatically correct, how is that possible? Please note that

Where on a glacier are oraines found?

315. ## Math

Luke bought some thing at the store. He paid $5.98 for a pizza,$3.75 for a case of soda $2.50 for a box of brownie mix and$1.01 in sales tax. What information is needed to find Lukes correct change?

316. ## Math

Maratha bakes between 4 1/4 and 9 3/4 hours each day at her bakery. About how many hours does she spend baking in one week?

317. ## Math

3[x + 2 (x + 1)^2 - 4x] What would you do first to simplify? What would you do second to simplify?

318. ## science

what is the condensed structures for the reactants and products for 2,3-dimethly-1-butene + water (with acid catalyst)--------> ??

-i squared square root of -80

335. ## Math

How many terms will you have if (x+5)^5 is expanded?

336. ## ethics

should the European culture of drinking wine should be allowed even in the workplace? Should businesses allow their european employees to drink with lunch for example? Why or why not?

337. ## science

which of the following best transmits light? a. pair of eyeglasses b. black construction paper c. a wooden door d. a concrete wall

338. ## PLZ look at Chemistry Questions!!!

No chemistry questions are getting answered =(

339. ## Chemistry

How much calcium chloride would you need to dissolve in 500 grams of water to create a solution whose boiling point is 100.40 C?

340. ## Algebra

Does x-3 represent a function?

341. ## :)

Which white person discussed or mentioned in Narrative Life is most important?

342. ## 12U Physics

An object is moving down a ramp that has mu=0.150. It initially starts at (0,1), and the bottom of the ramp is at (sqrt(3),0) Show that the parametric down the ramp are given by: ht tp://img819.imageshack.us/img819/5993/screenhunter03dec061758.gif I know

353. ## Math

If A = {1, 2, 3, 4, 5} and B=(1,2, 4, 6, 10}, then what is A U B?

354. ## math

what whole number does n stand for if the number sentence bleow is true? [n+5]+[3times2]=18

355. ## Financing

Reflect on the code of ethics for professional practice. What is your philosophy of financial planning? How do you see yourself carrying out your philosophy in your professional practice?

how many different ways can you get to the sum of 4

357. ## Calc

Find an equation of the tangent line to the graph of the function at the given point. 1 + ln xy = e^(x-y), (1,1)

what are some good steps for monitoring implementation of electronic medical records?

359. ## math

find the fith term (a5) of the sequence with the first term a1=10 and for whic each succwssive term is three tenths of the previous

360. ## college Chemistry

Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

361. ## math

write 1.06X as a sum

362. ## math

calculate the infinite sum of a geometric series with first term 15,000 and common ratio by (1-1/10)

363. ## algebra 2 quadratic inequalities

how would I find the solution to x/x+2 + 1/x-1 < 3/2

364. ## chemsitry

How would you figure-out which one is greater. You have 2.0 moles of H2O and 1.0 moles ofCO2 how would you get the answer.

365. ## Math

Jairo ears \$256 for 50 hours of work. Write an equation(proportion) to find x his wages for 76 hours of work

366. ## math

x intercept3,slope2

367. ## geography

who is a famous person from estonia????

368. ## art

12 square and value them from white to black

369. ## math

9+8log9 (9X)=81

what is 30 1/4-29 1/3

371. ## Singing

I am having a total meltdown.... I want to sing, but my voice is too low! HELP!!

372. ## MATHE HELP!

Write an expression that can be used to find the average if these numbers: 7, -2, 10, -4, -9

373. ## science

as the pressure of two crackers are increased the crackers finally break as the pressure subsides. How is this similar to the situation in California along the San Andreas Fault?

how do you convert 35ibs per minutes to ibs per hour?

375. ## math

i squared square root -80

376. ## Math

which is larger? .605 2/3 7/11 .67

3x^+4x-4=0

378. ## math

determination of surds